Keratoconus

What it means

A cone-shaped deformity of the cornea characterized by the presence of corneal distortion secondary to thinning of the apex.

Keratoconus is an entity characterid by several phenotypic findings such as corneal distortion (secondary to thinning of the apex) and either Fleischer's ring or Vogt's striae. This HPO term intends to denote the finding of corneal distortion and bulge.

Rare diseases that can present with this16

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Conical cornea